Gas valve

Abstract

The invention relates to a gas valve. A valve body is provided with a gas inlet, a gas inlet channel, a decompression chamber, a gas outlet channel and a gas outlet. A control part, a transmission mechanism and a switch part are arranged at the front end of the valve body, the control part drives the switch part through the transmission mechanism, and the switch part is arranged on a channel through which the decompression chamber is communicated with the air outlet channel and controls the opening / closing of the air outlet through the movement of the switch part; and the switch piece is arranged on one side deviating from the axis of the air inlet. The defect that in the prior art, a valve body is too thick, so that a gas supply tank is exposed when the valve body is applied to a small portable gas stove is overcome.

Description

Technical Field

[0001] The invention relates to the technical field of gas cookers, in particular to a gas valve. Background Art

[0002] The existing gas valve for a cassette stove, including the gas valve for a cassette stove, has an air inlet and a switch device arranged on opposite sides of the valve body, and the air inlet and the gas supply tank connection device and the switch member are arranged on the same axis, resulting in a relatively large thickness of the entire valve body. For example, the Chinese utility model specification (authorization announcement number: CN201487327U) discloses a gas valve for a cassette stove. Figure 1 As shown, it includes a valve body 1, the rear end of the valve body 1 has an air inlet 2 connected to the gas supply tank, the upper end of the valve body 1 is provided with a decompression chamber 3 connected to the air inlet 2, and the front end of the valve body 1 is provided with a rotating adjustment rod, that is, a combination of a knob and a switch 50, which is used to control the on / off of the air outlet 4 through the rotation of the switch 50. The gas supplied by the gas supply tank enters the decompression chamber 3 from the air inlet 2 for decompression. Under the control of the switch 50 at the front end of the valve body, the decompressed gas is output from the decompression chamber 3 and then enters the air outlet passage, and then outputs from the air outlet 4 to supply gas to the combustion mechanism. In this structure, the rotating adjustment rod is a combination of the switch 50 and the knob, which is relatively long. Since the rotating adjustment rod needs to be set at the front end of the valve body 1 and on the same axis as the air inlet 2, that is, the switch 50 and the air inlet are on the same axis, the front and rear spans of the valve body 1 are relatively large, resulting in a large thickness of the entire gas valve.

[0003] In recent years, with the rise of outdoor sports, portable outdoor equipment has flourished. In order to adapt to the trend and portability, outdoor portable cassette stoves have gradually become miniaturized. However, limited by the thickness of the cassette stove gas valve, miniaturized cassette stoves will appear as follows: Figure 2 As shown in the embarrassment, the gas supply tank has to be exposed outside the gas tank due to the thickness of the gas valve of the cassette stove. This design is helpless. In the event of an explosion, the gas supply tank is not restrained and may hit the user, or cause a large area of ​​gas leakage, leading to a more serious accident. The tail of the gas supply tank is exposed, and the pot will radiate heat to the gas supply tank during use, causing the gas supply tank to overheat, posing a safety hazard. The gas supply tank is exposed and is easily touched during use, causing leakage or the gas supply tank to fall off. The gas supply tank is exposed and is easily blocked by other objects during use, causing the overpressure safety device of the cassette stove to fail and the gas supply tank cannot be effectively ejected.

[0004] Therefore, the problem of the exposed setting of the gas supply tank of the small cassette furnace needs to be solved urgently. Summary of the invention

[0005] The purpose of the present invention is to provide a gas valve that overcomes the defect that the gas valve body of the prior art is too thick and cannot be adapted to a small outdoor stove, resulting in the gas supply tank being exposed.

[0006] To achieve the above object, the technical solution of the present invention is:

[0007] A gas valve comprises a valve body, wherein the valve body is provided with an air inlet connected to a gas supply tank, an air inlet passage, a decompression chamber, an air outlet passage and an air outlet for supplying gas to a combustion mechanism;

[0008] The air inlet is arranged at the rear end of the valve body and is connected to the decompression chamber through the air inlet duct, and the air outlet is connected to the decompression chamber through the air outlet duct;

[0009] The front end of the valve body is provided with a control component, a transmission mechanism and a switch component. The control component drives the switch component through the transmission mechanism. The switch component is arranged on a channel connecting the decompression chamber and the air outlet duct, and controls the on / off of the air outlet through its movement; the switch component is arranged on one side of the axis deviating from the air inlet.

[0010] The front side of the valve body is provided with a mounting groove, in which a switch device consisting of a knob as a control component, a transmission mechanism, and a switch component is arranged; the mounting groove is provided with a switch component mounting portion on one side of the axis deviating from the air inlet, and the other side of the mounting groove is provided with a knob; the switch component is arranged in the switch component mounting portion; the switch component mounting portion is communicated with the decompression chamber and the air outlet.

[0011] The transmission mechanism includes a driving gear, a transmission gear and a passive gear, which mesh with each other; the knob is connected to the driving gear, and the passive gear is connected to the switch member; the knob drives the driving gear to rotate, drives the transmission gear to drive the passive gear, and the passive gear drives the switch member to rotate to open / close the passage between the decompression chamber and the air outlet.

[0012] The knob is arranged on the axis of the air inlet; the decompression chamber is arranged on the same side of the switch component installation part, and the air outlet is arranged on the same side of the switch component installation part.

[0013] The switch component is a cone-shaped rotating shaft, which is fixedly connected to the passive gear, with an air inlet hole arranged at the bottom of the rotating shaft, an air outlet hole arranged at the side wall, and the air outlet hole communicating with the air inlet hole; the switch component mounting portion is a cone-shaped groove adapted to the shape of the rotating shaft, with a first through hole communicating with the decompression chamber arranged at the bottom of the groove, and a second through hole communicating with the air outlet duct arranged on the side wall of the groove; the rotation of the rotating shaft can make the air inlet hole communicate with or be staggered with the first through hole, and while the air inlet hole is communicated with or be staggered with the first through hole, the air outlet hole on the side wall of the rotating shaft is communicated with or be staggered with the second through hole.

[0014] A sealing sleeve is arranged between the groove and the rotating shaft. The sealing sleeve is in the shape of a hollow cone, a third through hole is arranged at the bottom, and a fourth through hole is arranged on the side wall. The third through hole is connected to the first through hole, and the fourth through hole is connected to the second through hole. The rotation of the rotating shaft can make the air inlet hole connected to or staggered with the first through hole and the third through hole. When the air inlet hole is connected to or staggered with the first through hole and the third through hole, the air outlet hole on the side wall of the rotating shaft is connected to or staggered with the second through hole and the fourth through hole.

[0015] A clamping groove is arranged on the side wall of the groove, a clamping strip is arranged on the outer wall of the sealing sleeve, and the clamping strip of the sealing sleeve is inserted into the clamping groove of the groove.

[0016] A cover body is arranged to cover the installation groove, an opening is arranged on the cover body at a position corresponding to the knob, and the transmission mechanism and the switch member are covered by the cover body in the installation groove.

[0017] The transmission mechanism includes a driving gear, a synchronous belt and a passive gear. The synchronous belt connects the driving gear and the passive gear. The knob is connected to the driving gear, and the passive gear is connected to the switch. The knob drives the driving gear to rotate, drives the synchronous belt to drive the passive gear to rotate, and the passive gear drives the switch to rotate to open / close the passage between the decompression chamber and the air outlet.

[0018] The transmission mechanism includes a driving wheel, a transmission belt and a passive wheel, the transmission belt connects the driving wheel and the passive wheel; the knob is connected to the driving wheel, and the passive wheel is connected to the switch component. The knob drives the driving wheel to rotate, drives the transmission belt to drive the passive wheel to rotate, and the passive wheel drives the switch component to rotate to open / close the passage between the decompression chamber and the air outlet.

[0019] The advantages of the present invention are as follows: 1. The regulating knob and the switch element of the prior art are arranged separately, which shortens the span of the front and rear ends of the valve body and reduces the thickness of the valve body; 2. The switch element is arranged beside the axis of the air inlet, which makes full use of the space in the middle part of the valve body, reduces the thickness of the valve body and utilizes the space of the valve body; 3. The switch element is controlled by a transmission mechanism, and the transmission mechanism can be made thinner, which effectively shortens the thickness of the front and rear ends of the valve body; 4. Because the switch element is arranged beside the axis of the air inlet, the air outlet can also be designed according to the position of the switch element, and is designed on one side of the switch element, which shortens the distance between the air outlet and the combustion device, and the air outlet reaction speed is faster; 5. The decompression chamber is arranged on the same side as the switch component mounting part, which effectively reduces the volume of the entire valve body and makes the valve body miniaturized; 6. The thickness of the valve body is thinned and the volume is reduced. The miniaturization of the gas valve makes the gas supply tank of the small cassette stove no longer exposed, eliminates safety hazards, and makes the cassette stove more portable and safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a structural schematic diagram of an existing cassette furnace cassette furnace gas valve;

[0021] Figure 2 It is an existing small-sized cassette furnace;

[0022] Figure 3 is a schematic structural diagram of the present invention;

[0023] Figure 4 is a schematic structural diagram of the valve body of the present invention;

[0024] Figure 5 is an exploded view of the transmission mechanism in the first embodiment of the present invention;

[0025] Figure 6 is a schematic structural diagram of the rotating shaft of the present invention;

[0026] Figure 7 is a schematic structural diagram of the sealing sleeve of the present invention;

[0027] Figure 8 is an exploded view of the transmission mechanism in the second embodiment of the present invention;

[0028] Figure 9 is an exploded view of the transmission mechanism in the third embodiment of the present invention;

[0029] In the figure: 1-valve body; 2-air inlet; 3-pressure reduction chamber; 4-air outlet; 5-switching device; 50-switching member; 51-knob; 52-rotating shaft; 521-air inlet hole; 522-air outlet hole; 53-driving gear; 531-driving wheel; 54-driven gear; 541-synchronous belt; 542-driving belt; 55-passive gear; 551-passive wheel; 56-sealing sleeve; 561-third through hole; 562-fourth through hole; 563-card strip; 6-mounting groove; 61-switching member mounting portion; 611-groove; 62-cover body; 63-driving gear mounting shaft; 64-driven gear mounting shaft; 65-first through hole; 66-second through hole; 67-card slot. Detailed implementation manners

[0030] The present invention will be further described below with reference to the accompanying drawings. The accompanying drawings are only for illustrative purposes and should not be construed as a limitation of this patent.

[0031] For the sake of more concise description of this embodiment, some components that are well-known to those skilled in the art but not relevant to the main content of this creation will be omitted in the drawings or description. In addition, for the sake of convenience of expression, some components in the drawings will be omitted, enlarged or reduced, but this does not represent the size or all structures of the actual product.

[0032] The present invention discloses a gas valve, as Figure 3-9 shown, comprising a valve body 1, the valve body 1 is provided with an air inlet 2 connected to a gas supply tank, an air inlet airway, a pressure reduction chamber 3, an air outlet airway and an air outlet 4 for supplying gas to a combustion mechanism;

[0033] The air inlet 2 is arranged at the rear end of the valve body 1, and is communicated with the decompression chamber 3 through the air inlet passage, and the air outlet 4 is communicated with the decompression chamber 3 through the air outlet passage;

[0034] like Figure 3 As shown, the front end of the valve body 1, i.e., the opposite end of the air inlet 2, is provided with a control component, a transmission mechanism and a switch component 50. The control component drives the switch component 50 through the transmission mechanism. The switch component 50 is arranged on the channel connecting the decompression chamber 3 and the air outlet duct, and controls the on / off of the air outlet 4 through its movement; the difference from the prior art is that the switch component 50 is arranged on the side of the axis deviating from the air inlet 2, so that the span of the front and rear ends of the valve body 1 is reduced. Compared with the existing gas valve, the thickness of the valve body 1 is thinned, and it can be applied to a small outdoor gas stove to avoid the following problems. Figure 2 Gas supply tank shown exposed.

[0035] like Figure 4 , Figure 5 As shown, a mounting groove 6 is provided on the front side of the valve body 1, and a switch device 5 consisting of a knob 51 as a control component, a transmission mechanism, and a switch component 50 is provided in the mounting groove 6; a switch component mounting portion 61 is provided on the side of the mounting groove 6 deviating from the axis of the air inlet 2, and the switch component 50 is arranged in the switch component mounting portion 61; the knob 51 is arranged on the other side of the mounting groove 6, and the switch component mounting portion 61 is communicated with the decompression chamber 3 and the air outlet 4.

[0036] Preferably, the knob 51 is arranged on the axis of the air inlet 2; the decompression chamber 3 is arranged on the same side of the switch component mounting portion 61, and the air outlet 4 is arranged on the same side of the switch component mounting portion 61. In this way, the distance between the decompression chamber 3 and the switch component mounting portion 61 is shortened, and the distance between the air outlet 4 and the switch component mounting portion 61 and the combustion mechanism is also shortened, which not only reduces the difficulty of processing, but also can further reduce the volume of the gas valve, which is convenient for miniaturization of the gas valve.

[0037] Preferably, if Figure 6 As shown, the switch member 50 is a frustum-shaped rotating shaft 52, with an air inlet 521 at the bottom of the rotating shaft 52 and an air outlet 522 at the side wall, and the air outlet 522 is connected to the air inlet 521. To increase air tightness, the air inlet 521 can be set as an eccentric hole.

[0038] The switch mounting portion 61 is a frustum-shaped groove 611 that matches the shape of the rotating shaft 52. Figure 4 As shown, the bottom of the groove 611 is provided with a first through hole 65 which is connected to the decompression chamber 3, and the side wall of the groove 611 is provided with a second through hole 66 which is connected to the air outlet duct; the rotation of the rotating shaft 52 can make the air inlet hole 521 connected to or staggered with the first through hole 65, and when the air inlet hole 521 is connected to or staggered with the first through hole 65, the air outlet hole 522 on the side wall of the rotating shaft 52 is connected to or staggered with the second through hole 66.

[0039] To enhance the sealing performance between the groove 611 and the rotating shaft 52, a sealing sleeve 56 is provided between the groove 611 and the rotating shaft 52. As Figure 7 shown, the sealing sleeve 56 is in the shape of a hollow frustum of a cone. A third through-hole 561 is provided at its bottom, and a fourth through-hole 562 is provided on its side wall. The third through-hole 561 communicates with the first through-hole 65, and the fourth through-hole 562 communicates with the second through-hole 66. The rotation of the rotating shaft 52 can cause the air inlet hole 521 to communicate with or be offset from the first through-hole 65 and the third through-hole 561. At the same time that the air inlet hole 521 communicates with or is offset from the first through-hole 65 and the third through-hole 561, the air outlet hole 522 on the side wall of the rotating shaft 52 communicates with or is offset from the second through-hole 66 and the fourth through-hole 562.

[0040] Furthermore, to ensure the stable and firm installation of the sealing sleeve 56, as Figure 4 、 Figure 7 shown, a clamping groove 67 is provided on the side wall of the groove 611, and a clamping strip 563 is provided on the outer wall of the sealing sleeve 56. The clamping strip 563 of the sealing sleeve 56 is inserted into the clamping groove 67 of the groove 611.

[0041] As Figure 5 shown, it is the first embodiment of the transmission mechanism.

[0042] The transmission mechanism includes a driving gear 53, a transmission gear 54, and a driven gear 55. The driving gear 53, the rotating shaft 52, and the driven gear 55 are fixedly connected. The transmission gear 54 and the driven gear 55 mesh with each other. The knob 51 is connected to the driving gear 53, and the driven gear 55 is connected to the switch member 50. The knob 51 drives the driving gear 53 to rotate, driving the transmission gear 54 and thus driving the driven gear 55. The driven gear 55 drives the switch member 50 to rotate to open / close the passage between the decompression chamber 3 and the air outlet 4.

[0043] As Figure 5 shown, the installation groove 6 is provided with a driving gear installation shaft 63 and a transmission gear installation shaft 64.

[0044] As Figure 8 shown, it is the second embodiment of the transmission mechanism.

[0045] The transmission mechanism includes a driving gear 53, a synchronous belt 541, and a driven gear 55. The synchronous belt 541 connects the driving gear 53 and the driven gear 55. The synchronous belt 541 is a conveyor belt with teeth on its inner surface, and the teeth on its inner surface mesh with the driving gear 53 and the driven gear 55. The knob 51 is connected to the driving gear 53, and the driven gear 55 is connected to the switch member 50. The knob 51 drives the driving gear 53 to rotate, driving the synchronous belt 541 and thus driving the driven gear 55 to rotate. The driven gear 55 drives the switch member 50 to rotate to open / close the passage between the decompression chamber 3 and the air outlet 4.

[0046] AsFigure 9 As shown, it is the third embodiment of the transmission mechanism.

[0047] The transmission mechanism includes a driving wheel 531, a transmission belt 542, and a driven wheel 551. The transmission belt 542 is a V-belt. The transmission belt 542 connects the driving wheel 531 and the driven wheel 551. The knob 51 is connected to the driving wheel 531, and the driven wheel 551 is connected to the switch member 50. The knob 51 drives the driving wheel 531 to rotate, drives the transmission belt 542, and thus drives the driven wheel 551 to rotate. The driven wheel 551 drives the switch member 50 to rotate to open / close the passage between the decompression chamber 3 and the air outlet 4.

[0048] Furthermore, a cover body 62 is provided to cover the installation groove 6. An opening is provided at the position corresponding to the knob 51 on the cover body 62. The transmission mechanism and the switch member 50 are covered by the cover body 62 in the installation groove 6.

[0049] In summary, the above is only the preferred embodiment of the present invention and is not used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent application scope of the present invention should fall within the technical scope of the present invention.

Claims

1. A gas valve, comprising a valve body (1), the valve body (1) being provided with an air inlet (2) connected to a gas supply tank, an air inlet passage, a decompression chamber (3), an air outlet passage and an air outlet (4) for supplying air to a combustion mechanism; The air inlet (2) is arranged at the rear end of the valve body (1) and is connected to the decompression chamber (3) through the air inlet passage, and the air outlet (4) is connected to the decompression chamber (3) through the air outlet passage; It is characterized in that: The front end of the valve body (1) is provided with a control component, a transmission mechanism and a switch component (50); the control component drives the switch component (50) through the transmission mechanism; the switch component (50) is arranged on a passage connecting the decompression chamber (3) and the air outlet passage, and controls the on / off of the air outlet (4) through its movement; the switch component (50) is arranged on a side of the axis deviating from the air inlet (2).

2. The gas valve according to claim 1, wherein: The front side of the valve body (1) is provided with a mounting groove (6), and a switch device (5) consisting of a knob (51) as a control component, a transmission mechanism, and a switch component (50) is arranged in the mounting groove (6); a switch component mounting portion (61) is arranged on one side of the mounting groove (6) that deviates from the axis of the air inlet (2), and a knob (51) is arranged on the other side of the mounting groove (6); the switch component (50) is arranged in the switch component mounting portion (61); and the switch component mounting portion (61) is communicated with the decompression chamber (3) and the air outlet (4).

3. The gas valve according to claim 2, characterized in that: The transmission mechanism comprises a driving gear (53), a transmission gear (54) and a driven gear (55), wherein the driving gear (53), the transmission gear (54) and the driven gear (55) are meshed with each other; the knob (51) is connected to the driving gear (53), and the driven gear (55) is connected to the switch member (50); the knob (51) drives the driving gear (53) to rotate, drives the transmission gear (54) to drive the driven gear (55), and the driven gear (55) drives the switch member (50) to rotate to open / close the passage between the decompression chamber (3) and the air outlet (4).

4. The gas valve according to claim 3, characterized in that: The knob (51) is arranged on the axis of the air inlet (2); the decompression chamber (3) is arranged on the same side as the switch component mounting portion (61); and the air outlet (4) is arranged on the same side as the switch component mounting portion (61).

5. The gas valve according to claim 4, characterized in that: The switch member (50) is a rotating shaft (52) in the shape of a cone, the rotating shaft (52) is fixedly connected to the passive gear (55), an air inlet (521) is arranged at the bottom of the rotating shaft (52), an air outlet (522) is arranged at the side wall, and the air outlet (522) is connected to the air inlet (521); the switch member mounting portion (61) is a cone-shaped groove (611) matching the shape of the rotating shaft (52), and a groove (611) is arranged at the bottom of the groove (611) matching the shape of the reducing gear (55). The ballast (3) is penetrated by a first through hole (65), and the side wall of the groove (611) is provided with a second through hole (66) which is penetrated by an air outlet passage; the rotation of the rotating shaft (52) can make the air inlet hole (521) communicate with or stagger with the first through hole (65), and when the air inlet hole (521) is communicated with or staggered with the first through hole (65), the air outlet hole (522) on the side wall of the rotating shaft (52) is communicated with or staggered with the second through hole (66).

6. The gas valve according to claim 5, characterized in that: A sealing sleeve (56) is arranged between the groove (611) and the rotating shaft (52). The sealing sleeve (56) is in the shape of a hollow cone, with a third through hole (561) arranged at the bottom thereof and a fourth through hole (562) arranged at the side wall thereof. The third through hole (561) is connected to the first through hole (65), and the fourth through hole (562) is connected to the second through hole (66). The rotation of the rotating shaft (52) can make the air inlet (521) connected to or staggered with the first through hole (65) and the third through hole (561). When the air inlet (521) is connected to or staggered with the first through hole (65) and the third through hole (561), the air outlet (522) on the side wall of the rotating shaft (52) is connected to or staggered with the second through hole (66) and the fourth through hole (562).

7. The gas valve according to claim 6, characterized in that: A clamping groove (67) is provided on the side wall of the groove (611), a clamping strip (563) is provided on the outer wall of the sealing sleeve (56), and the clamping strip (563) of the sealing sleeve (56) is inserted into the clamping groove (67) of the groove (611).

8. The gas valve according to claim 1, characterized in that: A cover body (62) is provided to cover the installation groove (6); an opening is provided on the cover body (62) at a position corresponding to the knob (51); and the transmission mechanism and the switch member (50) are covered by the cover body (62) in the installation groove (6).

9. The gas valve according to claim 2, characterized in that: The transmission mechanism comprises a driving gear (53), a synchronous belt (541) and a passive gear (55), wherein the synchronous belt (541) connects the driving gear (53) and the passive gear (55); the knob (51) is connected to the driving gear (53), and the passive gear (55) is connected to the switch member (50); the knob (51) drives the driving gear (53) to rotate, thereby driving the synchronous belt (541) to drive the passive gear (55) to rotate, and the passive gear (55) drives the switch member (50) to rotate to open / close the passage between the decompression chamber (3) and the air outlet (4).

10. The gas valve according to claim 2, wherein: The transmission mechanism comprises a driving wheel (531), a transmission belt (542) and a driven wheel (551); the transmission belt (542) connects the driving wheel (531) and the driven wheel (551); the knob (51) is connected to the driving wheel (531), and the driven wheel (551) is connected to the switch component (50); the knob (51) drives the driving wheel (531) to rotate, drives the transmission belt (542) to drive the driven wheel (551) to rotate, and the driven wheel (551) drives the switch component (50) to rotate to open / close the passage between the decompression chamber (3) and the air outlet (4).

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